A rectovaginal fistula (RVF) is an abnormal epithelialized tract that connects the posterior wall of the vagina to the anterior wall of the rectum. This abnormal communication allows flatus and fecal matter to pass through the vagina, causing significant physical distress and social isolation for the affected woman. In Nigeria, this condition remains a distressing public health concern due to its association with obstructed labor and traditional birth practices. Understanding this anatomy is the first step toward providing empathetic nursing care.
Obstetric trauma is by far the leading cause of rectovaginal fistulas in Nigeria, heavily linked to prolonged and obstructed labor in rural settings without skilled birth attendants. Other contributing factors include:
Women with a rectovaginal fistula typically present with a distinct history of passage of faeces and flatus per vaginam. During the nursing assessment, patients often report vaginal discharge that smells foul or feculent, recurrent vaginitis, and urinary tract infections due to fecal contamination. Nurses must conduct a sensitive, thorough history and physical examination, acknowledging the deep emotional trauma the patient carries. Inspection in the lithotomy position using a speculum or digital rectal-vaginal examination often reveals the opening.
Confirming the diagnosis involves simple bedside methods as well as specialized imaging. A methylene blue dye test can be performed by inserting a soaked gauze into the vagina and instilling methylene blue dye into the rectum; staining of the gauze confirms the fistula. Proctoscopy, sigmoidoscopy, and barium enema help outline the tract and rule out underlying bowel disease such as Crohn's. Examination under anesthesia (EUA) is frequently utilized to accurately assess the size, location, and tissue quality before surgical repair.
Successful surgical closure requires meticulous preoperative bowel preparation and patient optimization. Nurses ensure the bowels are thoroughly emptied using mechanical bowel preparation or enemas to reduce fecal contamination during the procedure. Nutritional support is vital, especially for malnourished patients common in resource-limited settings, focusing on high-protein diets and micronutrient supplementation. Psychological counseling helps alleviate anxiety, as many patients harbor deep shame and fear of surgical failure.
Surgical closure is the definitive treatment for rectovaginal fistulas. The choice of surgical approach depends on the size, etiology, and location of the fistula, as well as surgeon preference:
Postoperative nursing demands vigilance to protect the surgical repair from undue tension or contamination. Nurses maintain strict stool softeners or low-residue diets to prevent early bowel movements that could strain the suture line. Catheter care is crucial as urinary retention can cause bladder distension and put pressure on the anterior vaginal wall repair. Patients are nursed in positions that avoid direct pressure on the perineum, and wound hygiene must be maintained meticulously.
While many fistula repairs heal successfully on the first attempt, complications can occur. Failure of the repair and recurrence of the fistula are the most significant challenges, often resulting from wound infection, tension, or poor tissue healing. Strictures of the vagina or rectum can also develop from excessive scar tissue formation. Long-term prognosis is generally favorable with skilled surgical technique and dedicated nursing support, allowing women to return to normal social and marital lives.